I've faced the same problem with info overload, even with the new astrophysics subfields introduced by arXiv. I am an active user of papers.app and have used Me

I've faced the same problem with info overload, even with the new astrophysics subfields introduced by arXiv. I am an active user of papers.app and have used Mendeley in the past; it helps with organizing but filtering is still a challenge. I've thought about doing something like this for the arXiv, even something as simple as setting up a http://www.pligg.com/ http://www.pligg.com/ may be a start; I'm planning to do at least that much for my own lab in the next few months. I've already got two other startups of my own so I couldn't commit to a larger version of this side project at this point, but ping me if you want to chat about ideas and I could possibly point you to others with more bandwidth. I have experience in iPhone app development, web dev, and machine learning--and of course in startup founding and academia (I've worked in 7 labs doing research, now am a PhD student in astrophysics).